Mains-Tester Screwdrivers are fully insulated and are more than just a conventional voltage tester as they can perform the following tests: continuity, bulbs, fuses, short circuits, cable tracking, mains sockets and microwave oven leakage.
The built in battery powered sensor allows the tester to perform a number of different functions without the need to dismantle a suspected faulty item or have any contact with live parts.
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